Numerical analyses on dynamic control of five-degree-of-freedom maglev vehicle moving on flexible guideways
FREE-DOWNLOAD XJ Zheng, JJ Wu… – Journal of sound and Vibration, 2000 This paper presents numerical analyses on dynamic behavior of a maglev vehicle with a control system moving on flexible guideways. The vehicle is simplified as a body with the primary and the secondary suspension parts and has five-degree-of-freedom (dof). So, its five kinds of
Cognitive radio design challenges and techniques
FREE-DOWNLOADB Razavi – Solid-State Circuits, research Journal of, 2010 – Abstract—Cognitive radios are expected to communicate across two or three frequency decades by continually sensing the spec- trum and identifying available channels. This paper describes the issues related to the design of wideband signal paths and the decades-wide
Collaborative Spectrum Sensing from Sparse Observations in Cognitive Radio Networks
FREE-DOWNLOAD JJ Meng, W Yin, H Li… – Selected Areas in …, 2011 Abstract—Spectrum sensing, which aims at detecting spectrum holes, is the precondition for the implementation of cognitive radio (CR). Collaborative spectrum sensing among the cognitive radio nodes is expected to improve the ability of checking complete spectrum usage. Due